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Issue Error 500 PHP

spsgorgan

New Pleskian
Hi
We have servers the following configurations :

Windows Server 2019
SQL 2019
PHP 7.4.33
Memory : 80 GB
CPU : 16 Core
Plesk Version : 18.0.58

We designed the site with php and Sql.Recently, the site is facing many 500 errors.
Nothing can be seen in the error_log other than normal php warining.
By refreshing the page, the site opens quickly.
The number of users increases, the site slows down, and after displaying the 500 error again, the site speed is good!

Please guide me how can I troubleshoot.
 
See attached file plz
 

Attachments

  • Screenshot 2024-01-13 at 01-08-34 500 Internal Server Error.png
    Screenshot 2024-01-13 at 01-08-34 500 Internal Server Error.png
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